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Electro-oxidation of amoxicillin using titanium electrodes electrophoretically coated by iridium or ruthenium with tantalum oxides

Le�n, Itzel; Gomes, Helena; Sep�lveda?Guzm�n, Selene; C�rdenas, Jesus; Rivera, Fernando; Manr�quez, Juan; Bustos, Erika

Electro-oxidation of amoxicillin using titanium electrodes electrophoretically coated by iridium or ruthenium with tantalum oxides Thumbnail


Authors

Itzel Le�n

Selene Sep�lveda?Guzm�n

Jesus C�rdenas

Fernando Rivera

Juan Manr�quez

Erika Bustos



Contributors

Abstract

© 2020 Society of Chemical Industry (SCI) BACKGROUND: Amoxicillin (AMX) is one of the pharmaceutical compounds in waters being targeted in wastewater decontamination studies, and some of the technological alternatives to degrade it involve using modified surfaces with transition metal oxides, such as IrO2/Ta2O5|Ti and RuO2/Ta2O5|Ti, for in situ production of hydroxyl radical (•OH) to oxidize AMX in aqueous media. RESULTS: The IrO2/Ta2O5|Ti 70:30 electrode was best suited for AMX electro-oxidation, with 99.23% removal measured by HPLC-UV–Vis, 81.13% by COD removal, and current efficiency of 41.1% in 0.1 mol L–1 Na2SO4 after applying 15 mA for 6 h. These results are due to a larger surface area (251.67 cm2) and a higher amount of •OH radicals being generated by cm2 in neutral pH (3.8 mol L–1 cm−2) compared to the other electrodes. CONCLUSION: This paper shows the simulation of the experimental data regarding the complete degradation of AMX (100%) by HPLC, comparing the experimental results and simulation results for AMX degradation using the IrO2/Ta2O5|Ti 70:30. The modeling predicts and validates the disengagement of COD obtained experimentally, considering the mechanism proposed by Trovó and collaborators for the electro-oxidation of AMX to product C6 (C16H22N3O7S) by generating •OH. © 2020 Society of Chemical Industry (SCI).

Citation

León, I., Gomes, H., Sepúlveda‐Guzmán, S., Cárdenas, J., Rivera, F., Manríquez, J., & Bustos, E. (2021). Electro-oxidation of amoxicillin using titanium electrodes electrophoretically coated by iridium or ruthenium with tantalum oxides. Journal of Chemical Technology and Biotechnology, 96(3), 622-629. https://doi.org/10.1002/jctb.6575

Journal Article Type Article
Acceptance Date Sep 21, 2020
Online Publication Date Sep 21, 2020
Publication Date 2021-03
Deposit Date Sep 25, 2020
Publicly Available Date Mar 28, 2024
Journal Journal of Chemical Technology and Biotechnology
Print ISSN 0268-2575
Electronic ISSN 1097-4660
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 96
Issue 3
Pages 622-629
DOI https://doi.org/10.1002/jctb.6575
Keywords Biotechnology; Fuel Technology; Inorganic Chemistry; Renewable Energy, Sustainability and the Environment; Organic Chemistry; Waste Management and Disposal; Pollution; General Chemical Engineering
Public URL https://nottingham-repository.worktribe.com/output/4924006
Publisher URL https://onlinelibrary.wiley.com/doi/abs/10.1002/jctb.6575

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